/*
 * Copyright (c) 2022-2022 Huawei Technologies Co., Ltd. All rights reserved.
 * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 * of conditions and the following disclaimer in the documentation and/or other materials
 * provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 * to endorse or promote products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include "It_posix_container.h"
#include <netinet/in.h>
#include <string.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <unistd.h>
#include <semaphore.h>
#include <sys/socket.h>
#include <poll.h>

#define STACK_SIZE (1024 * 1024)    /* Stack size for cloned child */
#define CHILD_FUNC_ARG (0x2088)
#define SERVER_IP "127.0.0.1"
#define SERV_PORT 8002
#define SERVER_MSG "Hi, I'm Tcp Server!"
#define PEER_MSG "Hi, I'm Tcp Client!"

static int TcpClient(void *arg) {
    int ret;
    int client;
    char buffer[sizeof(SERVER_MSG)];
    struct sockaddr_in server_addr;

    client = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    ICUNIT_ASSERT_NOT_EQUAL(client, -1, client);

    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
    server_addr.sin_port = htons(SERV_PORT);
    (void)memset(&(server_addr.sin_zero), 0, sizeof(server_addr.sin_zero));

    ret = connect(client, (struct sockaddr *)&server_addr, sizeof(server_addr));
    ICUNIT_ASSERT_NOT_EQUAL(ret, -1, ret);

    ret = send(client, PEER_MSG, sizeof(PEER_MSG), 0);
    ICUNIT_ASSERT_NOT_EQUAL(ret, -1, ret);

    ret = recv(client, buffer, sizeof(buffer), 0);
    ICUNIT_ASSERT_NOT_EQUAL(ret, -1, ret);

    ret = strcmp(buffer, SERVER_MSG);
    ICUNIT_ASSERT_EQUAL(ret, 0, ret);

    (void)close(client);

    return 0;
}

static int childFunc(void *) {
    int ret;
    int server;
    int status;
    char *stack;
    char *stackTop;
    char buffer[sizeof(PEER_MSG)];
    struct sockaddr_in server_addr;

    server = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    ICUNIT_ASSERT_NOT_EQUAL(server, -1, server);

    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
    server_addr.sin_port = htons(SERV_PORT);
    (void)memset(&(server_addr.sin_zero), 0, sizeof(server_addr.sin_zero));

    ret = bind(server, (struct sockaddr *)&server_addr, sizeof(server_addr));
    ICUNIT_ASSERT_NOT_EQUAL(ret, -1, ret);

    ret = listen(server, 1);
    ICUNIT_ASSERT_NOT_EQUAL(ret, -1, ret);

    stack = (char*)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0);
    stackTop = stack + STACK_SIZE;

    int arg = CHILD_FUNC_ARG;
    int pid = clone(TcpClient, stackTop, SIGCHLD, &arg);

    int client = accept(server, NULL, 0);
    ICUNIT_ASSERT_NOT_EQUAL(ret, -1, ret);

    ret = recv(client, buffer, sizeof(buffer), 0);
    ICUNIT_ASSERT_NOT_EQUAL(ret, -1, ret);

    ret = strcmp(buffer, PEER_MSG);
    ICUNIT_ASSERT_EQUAL(ret, 0, ret);

    ret = send(client, SERVER_MSG, sizeof(SERVER_MSG), 0);
    ICUNIT_ASSERT_NOT_EQUAL(ret, -1, ret);

    (void)close(client);
    (void)close(server);

    ret = waitpid(pid, &status, 0);
    ICUNIT_ASSERT_EQUAL(ret, pid, ret);

    int exitCode = WEXITSTATUS(status);
    ICUNIT_ASSERT_EQUAL(exitCode, 0, exitCode);

    return 0;
}

static UINT32 TestCase(VOID)
{
    int ret = 0;
    int status;
    char *stack;
    char *stackTop;

    stack = (char*)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0);
    stackTop = stack + STACK_SIZE;

    int arg = CHILD_FUNC_ARG;
    int pid = clone(childFunc, stackTop, SIGCHLD | CLONE_NEWNET, &arg);

    ret = waitpid(pid, &status, 0);
    ICUNIT_ASSERT_EQUAL(ret, pid, ret);

    int exitCode = WEXITSTATUS(status);
    ICUNIT_ASSERT_EQUAL(exitCode, 0, exitCode);

    return 0;
}

VOID ItPosixContainerNet006(void)
{
    TEST_ADD_CASE("IT_POSIX_CONTAINER_NET_006\n",TestCase, TEST_POSIX, TEST_CONTAINER, TEST_LEVEL0, TEST_FUNCTION);
}
